Portable motor base



PORTABLE MOTOR BASE Filed July so, 1946 12' H 21 20 F 1 1'7." ,4 19 7 1 V Patented Jan. 6, i948 UNITED STATES PATENT OFFICE Gerard izfgtifif afizfif zufliifcanada Application July 30, 1946, Serial No. 687,107

In Canada August 3, 1945 .7

In various manufacturing operations, motors of different ratings are required at different times at a given station, It is sometimes customary to provide all the necessary motors permanently installed at the given station, in view of the fact that considerable time is employed to remove any particular motor and rep1ace it'with another as needed.

The principal object of the invention is to provide a portable motor base that does away with the installation of a plurality of motors at any particular station. In other words, the base with a motor thereon is so easily installed or removed that the manipulation is very rapid and entirely economical.

In the accomplishment of this object the base comprises a pair of spaced frame members on which is mounted a horizontal plate which'in turn carries the motor. The side members are notched from their respective lower edges toreceive an anchor bar mounted on the work table or other support at the work station. Slides are mounted in the side frame members and have their ends shaped to cover the notches partially at a distance from their upper ends, thereby con-1 verting the notches to enclosed spaces of dimensions suitable for confining and locking the anchor bar. The slides are normally moved to the locking position by a coil spring. They are withdrawn from the locking position by a lever and link connection, Although the withdrawing movement places the spring under tension, the connection from thelever to the slides has an over-center movement so that it becomes locked in the open position until released.

The invention is fully disclosed by way of example in the following description and in the accompanying drawings in which:

Figure 1 is a plan view of the device;

Figure 2 is a section on the line 2--2 of Figure 1;

Figure 3 is a side elevation;

Figure 4 is a similar view showing a different adjustment of the device;

Figure 5 is a section on the line 5-5 of Figure 1;

Figure 6 is a section on the line 6-6 of Figure 2;

Figure 7 is a section similar to Figure 2 but showing a diiferent position of the parts;

7 Claims. (01. us -19) Figure 8 is a section similar to Figure 5 and showing a different adjustment;

Figure 9 is a detail of Figure 1 in a different adjustment of parts, and

Figure 10 is a detail perspective view of the anchoring bar. I

Reference to these views will now be made by use of like characters which are employed to designate corresponding parts throughout.

' The device includes, and is built upon, a plane member or plate I of rectangular form and consisting preferably of wood in order to reduce the transmission of sound, or of other suitable material. The longitudinal edges of the member I rest upon a pairof hollow members 2 in the form of angle irons fitted with blocks 3 to form an enclosure or channel in each angle iron. The angle irons, near one end, are notched at 4, and the'members 3 terminate at the notches 4 in order not to obstruct them. The blocks 3 are mortised-transversely at 5 at a distance from the notches 4 and are further rabbetted lengthwise at B in the respective surfaces directly adjacent to the vertical sides of the angle irons. The grooves 6 receive plates or strips 1 engaging the vertical sides of the angle irons, The members l are joined by a tie bar 8 extending through the openings 5 of the members 3, whereby the assembly 1, 8 is sli'dable lengthwise of the members 2, 3.

An end of each plate I is reduced and pointed at 9 in order to traverse the notches 4 without completely obstructing them, as shown in FigureB, and thereby form clear openings Ill. The

openings [0 receive a transverse anchor bar or rod II shown in perspective in Figure 10. The member H is held in the openings Ill at a corresponding distance above the work bench or floor shown in Figure 4, by means of end posts l2 secured to the floor.

On the'plane member I, at the end opposite the notches 4, is pivotally and centrally mounted a lever [3 to which is attached a stirrup I4 formed with a stem l5 which is loosely attached to the cross bar 8 by a bolt [6. The shaft I5 has one end of a longitudinal coil spring I! anchored thereto, the other end of the spring being attached to an anchor plate [8 secured to the member l between the notches 4.

On the member l is mounted a pair of pillow blocks [9 at the longitudinal edges and approximately over the lever l3 in the position shown in Figures 1 and 2. The blocks l9 support a transverse shaft having a single pulley 2| at one end and a multiple-grooved pulley 22 at the other end. The pulley 2! is engaged by an endless belt 23 which passes around a pulley 24 secured on the shaft 25 of an electric motor 26. The motor is attached to the member I at one edge by hinges 21, while the opposite edge is releasably engaged by a spring latch 28.

In the use of the invention, an anchor bar II is provided at each station where a motor is to be used. The stations are located with proper reference'to the mechanism which is to be driven by a belt mounted in the selected groove of the pulley 22. The shaft 20 is driven from the pulley 2! which is connected to the motor pulley 24 by the belt 23. e

In order to fasten the device. toa particular bar H, the notches 4 are fitted overthe bar, and the lever I3 is moved from the position shown in Figure 7 to the position shown in Figure 2', whereby the stirrup advances the tie bar 8 and the side plates '1. The pointed free ends 9 of the latter traverse the notches 4- and form enclosures H) which confine the H and. lock the motor base to the bar. 7

In order to release the base. from thebar H, the lever i3 is turned counterclockwise to the position shown in Figure 7, thereby withdrawing the ends 9 from the notches 4, so that the base can be lifted. The release position. shown in Figure 7 is maintained, notwithstanding thetensi-on of the spring H, by an overacenter-movement or toggle action at the point where the spring is joined to the stem 15. I

A new belt 23 is applied to the pulleys .21 and 24, when necessary, by releasing the latch finger 2:8 and tilting themotoron its hinge 27, as shown in Figure 4. 1

It is contemplated that motors of various sizes be provided on bases of the character described, The proper motor for any station at any given time is thus'readily installed by bringing it with its base to the station and attaching the base to the anchor bar I! in the manner described.

Although a specific embodiment of theyinvention has been illustrated and described, it will be understood that various alterations in the details of construction may be madewithout departing from the. scope of the invention as indicated by the apended claims.

What I claim as my invention is:

1. A portable base for a motor comprising a pair of spaced frame members, a plate mounted thereon, said frame membersbeing notched from their lower edges to receive an anchor bar,v a pair of slides in said frame member-shaving ends adapted to cover said: notches partially at, adistance from their upper ends, thereby leaving enclosed openings for confining the anchor bar; and means for sliding said slides.

2. A portable base for a. motor comprising a pair of spaced frame members, a plate. mounted thereon, said frame members. being notched from their lower edges to receive an anchor bar, a pair of slides in said frame members having ends adapted to cover said notches partially at a. dis-.

tance from their upper ends, thereby leaving enclosed openings for confining the anchor bar, a lever pivoted to the bottom of said plate, a tie bar joining said slides, and a connection from said lever to said tie bar.

3. A portable base for a motor comprising a pair of spaced frame members, a plate mounted thereon, said frame members being notched from their lower edges to receive an anchor bar, a pair of slides in said frame members having ends adapted to cover said notches partially at a distance from their upper ends, thereby leaving enclosed openings for confining the anchor bar, a lever pivoted to the bottom of said plate, a tie \bar joining said. slides, and a connection from said lever to said tie bar, and a spring connecting "Said; connection to a fixed point on the bottom of said plate and adapted to draw said slides toward-said notches.

4. A portable base for a motor comprising a pair of spaced frame members, a plate mounted thereon, said frame members being notched from their lower edges to receive an anchor bar, a pair of slides in said frame members having ends adapted to cover said notches partially at a distanc from their upper ends, thereby leaving enclosed openings for confining the anchor bar. and means for sliding said slides, a shaft journalled on said plates and pulleys onthe ends of. said shaft.

5-. A portable base for a motor comprising a pair of spaced frame members, a plate mounted thereon, said frame, members being notched from their lower edges to receive an anchor bar, a pair of slides in said frame members having ends adapted to. cover said notches partial-1y at a distance from their upper ends, thereby leaving enclosed openings for confining the anchor bar, a motor on said plate, and means for sliding said slides.

.6. A portable. base for a motor comprising a pair of spaced frame members of angle iron, blocks secured in said irons and spaced from one side .thereof.,, said blocks being grooved lengthwise, slides mounted in the grooves, a tie. bar joining said slides and. passing over said blocks, said frame members being notched from their lower edges to receive ananchor bar, said slides having their ends adapted to cover said notches partially at a distance from their upper ends, thereby leaving enclosed openings for confining the anchor bar, and means for sliding said slides.

7. A portable base for a motor comprising a pair of spaced frame members, a plate mounted thereon. said frame members being notched from their lower edges an anchor bar adapted for attachment to a support and for reception in the closed, ends of the notches, a pair of slides in said frame members having ends adapted to cover said notches partially at; adistance from their upper ends, thereby leaving enclosed openings for confining the anchor bar, and means for sliding said slides.

GERARD BERGERON' 

